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Re: Access array elements with String [message #61351 is a reply to message #61350]

Mon, 14 July 2008 12:49

Jean H.
Messages: 472
Registered: July 2006

Senior Member

> It looks like the asterisk character is interpreted as something
> different inside the brackets of an array.
> This interpretation is not a string '*', so that would explain the
> error of trying to use the string in this context.
>
> Is anyone familiar with how to reformat the * in such a way so as the
> interpreter would recognize it ?
>
> Thanks in advance,
> --Justin

well... Bob gave you two solutions already
0:s[n] and
indgen(s[n])

Now if you really want to use the *, you might want to have a look at
the command "execute"
IDL> a = '*'
IDL> b = indgen(3,3)
IDL> c = '1'
IDL> tmp= execute('e = b[' + c + ',' + a +']')
IDL> print,e
1
4
7

but be aware of the limitations of this command (read the help)
Jean

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[Message index]

		Re: Access array elements with String By: humanumbrella on Mon, 14 July 2008 13:17
		Re: Access array elements with String By: Jean H. on Mon, 14 July 2008 12:44
		Re: Access array elements with String By: Jean H. on Mon, 14 July 2008 12:49
		Re: Access array elements with String By: humanumbrella on Mon, 14 July 2008 12:58
		Re: Access array elements with String By: Paul Van Delst[1] on Mon, 14 July 2008 12:46
		Re: Access array elements with String By: Bob[3] on Mon, 14 July 2008 12:23
		Re: Access array elements with String By: humanumbrella on Mon, 14 July 2008 12:01
		Re: Access array elements with String By: David Fanning on Mon, 14 July 2008 10:09
		Re: Access array elements with String By: humanumbrella on Mon, 14 July 2008 10:06
		Re: Access array elements with String By: humanumbrella on Mon, 14 July 2008 09:59
		Re: Access array elements with String By: Bob[3] on Mon, 14 July 2008 09:30
		Re: Access array elements with String By: humanumbrella on Mon, 14 July 2008 08:49
		Re: Access array elements with String By: Bob[3] on Mon, 14 July 2008 08:41

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